my little boy is the exact same and has been for a few weeks now (17weeks old) definitely think it’s a sign of teething, starting to feel little teeth on their way through now so i’d say yes
Mine has started doing this too at 16 weeks, looks me in the eyes and smiles whilst doing it😩
Try a teether before you feed to get the itch to bite out. Then nurse. Then offer teether again. Good luck!